
I have a piece of cardboard on my kettle. I wrote DON'T BUY it. This is a different brand of filters. When I used this brand, the cardboard frame softened and the partially pleated filter was almost impossible to remove from the duct. During the removal/destruction of the filter, a large amount of dust got into the air duct and was carried back into the house. Now 3M/Filtrete have switched to these cheap cardboard frames which make removing the filter almost impossible and causing dust to build up in my air ducts. I'm looking for another brand. At the moment there are two cardboard strips on my kettle that say DO NOT BUY. One of them also reads Filtrete.

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